Pipe-threading device.



Patented Mar. 16, 1909.

C l @N MVM N a S F BARTOL PIPE THREADING DEVICE. APPLIOATION FILED DE0.1o,19oa.

siiiiiziiti. eAirroL, or New YORK, n] v.

PIPE-THREADING- kDEVIGE.

Specification. of Letters Patent.

Patented March 16, 1909.

i Application filed December l0, 1906. Serial No. 34.7,2-.

To /Llt :Li/ioni 'it inrlj/ concern:

Be it known that l, SAMUEL F.-BAirroL, a

citizen ol the lfnited States, and residingr at New York, in the county olE New York and Siate ol New York, have invented eert-ain new and usel'ul Improvements in Pipe- 'threading Devil-es, ol which the following is a speeitication, .heh as will enahle those skilled in the art to whioh'it appertains to make. and use the saine.

'l`his invention relates to devices l'or use in threading,l pipes7 and particularly lor use in threading pipes secured in or protruding l'rom a wall, ceiling or other structureJ and the ohjeet tliereoll is to provide an improved centering device l'or use in connection with an ordinary pipe inserted intotho pipe tohe threaded so as to guide the threador and Center the end ol the pipe to he threaded therein.

'l`he invention is lull)vr disolosci lowing,l speoilication, ot' which the aerompanying drawing l'ornis a part7 in which the separate parts ol' my improvement are designated h v suitahle reference characters in zieh ol' the views, and in whirh;

Figure l is a sectional side view showing a pipe to he threaded, my improved eentcrinj; device placed therein and the niethod olI using said eentering device in eonneetion with an ordinary pipe threader view ol. my improved centeringr device de taohed.

inthedrawingformingpartoltliisspeeiiication, l have shown at 'ria pipe to he threaded, and ll have. also shown an ordinaijv pipo threader or pipo threading; device, coinprisiner a steelt b oi the usual const ri ytion aiu provided with handles b2, together with a die head or socket ineinher e in whioh the thread cutting,` dies d are placed, iorined or seeurei in the-usual manner 'l`he die head or die holding device c is provided with an angular shank 1:2 which passes through a i-,orresixiouding opening in the sioek My improved centeiing' devioe comprises a tuhe 1' adapted to he inserted into tho pipe to he threaded and provided at one end with longitudinal slots e! forming spring tongues l and also prel'erahly provided or memhers e' nly a predotorinined distanee l'ioin said end with a tapered oollai e4. Passed through the tuhel e is a rod fprov-ided at one end with a head f2 havingr a tapered or eonioal member f :md provided with a transverse aperturef through which a holt or pin may he passed l in the lol-v i l l i i i i l i l i E clearly shown in Fig, thrcader and adapted to he for the purpose oi' turning the rod The end of the rod f opposite the head f2 is threaded shown at f5, and inounted thereon is a conical nut g provided with longitudinal i'ihs ffl adapted to enter the slots e2 in the tuhe e so as to prevent the turning of said nutvwhen the rodf is tumed.

ln the use ot' this device, the tuhe e the rod f therein is inserted into t he threaded as shown in Fig. 1. is then turned'in the nut f/ so with he pipe to The iodf as to draw said uut inwardly and Vforce, the sprinv's or spring` tongues rx oll the tube e outwardiy and into eontaet with the inner walls oi the pipe te lie threaded. This position of the parts is l,and after the tube e has heen secured to the pipe a iii this manner, the threading device is hroughtlinto use. 'lho tuhe i: passed through the/threading device which is provided with a longitudinal hoi-e, or in other werds the threading device is passed ou over the tulie e, and when the dies n' eonie in contact with the end ot' thi` pipe o to he, threaded the threading device is tui-ned hy meaiisoll the handles bA2 ol' the stock l; in the usual manner.`

'l`he tuhe e, as will he understood, centers the pipe u to he threaded and forms a guide l'or the threading device and the threading device. mayY he used without any previous skill or rare, all that is necessary heine,` to )ass the said threading device on over the tuhe c until it cornes in eontaet with the end ol' tho pipe it when said threading deviee is turned and torre( manner.

'l`he die head or soci-:et meniher c is oi the' usual l'oriii exe-pt that the shank c'l thereof is extended and provided wittha longitudinal here through which the tube e passes when the threader is in use and' this is` one ol the features ot' my invention and makes possihle as hereinhetore l forwardly in the usual the use ot' the guidejtuhe e desorihed.

in the forni of construction Shown, the luie e closely tits the pipe a to he threaded, hut this is not necessary as the tuhe e may he niueh smaller than the pipe (t if desired,

Having fully described my invention, what l elaini ,as new and desire to secure hy Letters Patent, isz@ A centering device i'orpipe threading dies comprising` a tuhe slotted at one end to loini sprinpr tongues, a rod passing` through said headV at one end hy whioh tuhe and having a it mabr he turned and having screw threads t ile 5 relation to said tube, and a flaring stop meln- Witnesses; y.

at the opposite end, u eonieal nut threaded as niy invention l have upon said roll, longitudinal ribs formed upon presence of the subscri said nut and entering the slots Vofthe tube, l whereby the nut is held signed my naine in bilig Witnesses this y 7th day of December, 1906. t

against turning 'with SAMUEL F. iilt'lOli. k,ber formed upon the outer fceofthe tube. l C. E. MULREANY,

lIn testimony that I claim'the foregoing Il PAUL BARTELS. 

